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The Lepai 4-channel car amplifier is a compact Class D amp rated at 4 x 100W, built for budget systems that need to drive four speakers or two speakers plus a sub. It runs on 12V and uses spring-loaded speaker terminals and RCA inputs, so wiring is simple for a first install. It suits shoppers powering door speakers or a small sub on a tight budget, but it is not a substitute for a name-brand amp with certified RMS ratings, crossovers and a heatsink built for long, loud sessions.
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Lowest price we've seen: $99.98 on Nov 9 at PARTS EXPRESS. Tracked across 1 store since Nov 9.
Owner feedback on the Lepai 4-channel amp is mixed. People like how small and easy it is to wire for a budget build, but many say the real output is well below the 4 x 100W label and that it distorts or shuts down when pushed hard.